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October 19, 2021 16:26
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| // custom_windows_standalone.ccs - v1 | |
| // Allows you to open 2 windows simultaneously with variable sizes | |
| // Doesn't require expand_text_windows (hence the standalone part) | |
| // cooprocks123e 2021 | |
| import asm65816 | |
| import ccexpand | |
| import cc_asmcall | |
| // Summary: | |
| // Use the command: CustomWindow_open(window number, X position, Y position, width, height) | |
| // The position and size parameters are in 8x8 tile units, same as the normal window definitions in the window table. | |
| // For window number, you must use windows from CustomWindow0 to CustomWindow1 | |
| // Examples: | |
| // Open window the size of the screen: | |
| // CustomWindow_open(CustomWindow0, 1, 1, 30, 26) | |
| // Open window with same size and position as default text window: | |
| // CustomWindow_open(CustomWindow0, 0x000C, 0x0001, 0x0013, 0x0008) | |
| // These are the custom windows available. | |
| // Use them with the CustomWindow_open CCScript command, | |
| // or by setting MEM_CustomWindowParams_{X,Y,W,H} and then | |
| // creating one of these windows normally. | |
| // In the event that you have more unused windows, | |
| // replace the -1s in this list with the window # | |
| // (make sure to do it in order from CustomWindow0 to 9) | |
| define CustomWindow0 = 11 | |
| define CustomWindow1 = 52 | |
| define CustomWindow2 = -1 | |
| define CustomWindow3 = -1 | |
| define CustomWindow4 = -1 | |
| define CustomWindow5 = -1 | |
| define CustomWindow6 = -1 | |
| define CustomWindow7 = -1 | |
| define CustomWindow8 = -1 | |
| define CustomWindow9 = -1 | |
| CustomWindowList: { | |
| byte CustomWindow0 | |
| byte CustomWindow1 | |
| byte CustomWindow2 | |
| byte CustomWindow3 | |
| byte CustomWindow4 | |
| byte CustomWindow5 | |
| byte CustomWindow6 | |
| byte CustomWindow7 | |
| byte CustomWindow8 | |
| byte CustomWindow9 | |
| byte -1 // List terminator, in case all 10 windows are used | |
| } | |
| command CustomWindow_open(num, x, y, w, h) { | |
| cc_asmcall(ASM_CustomWindow_open, RET_NONE) | |
| byte num | |
| byte x | |
| byte y | |
| byte w | |
| byte h | |
| } | |
| //////////// | |
| // ASM stuff | |
| // Needs to be 4 sequential bytes in memory | |
| define MEM_CustomWindowParams_X = 0x7E965C | |
| define MEM_CustomWindowParams_Y = 0x7E965D | |
| define MEM_CustomWindowParams_W = 0x7E965E | |
| define MEM_CustomWindowParams_H = 0x7E965F | |
| define CreateWindowFar = 0xC1DD47 | |
| ASM_CustomWindow_open: { | |
| LDY_i(0x0005) | |
| JSL(R_Read_Parameter_Bytes) | |
| LDA_a(D_cc_argv_1) | |
| STA_a(MEM_CustomWindowParams_X) // and Y | |
| LDA_a(D_cc_argv_3) | |
| STA_a(MEM_CustomWindowParams_W) // and H | |
| LDA_a(D_cc_argv_0) | |
| AND_i(0x00FF) | |
| JML(CreateWindowFar) | |
| } | |
| // Partway through CreateWindow: | |
| ROM[0xC105D3] = { | |
| // Orig: TYA ASL ASL ASL STA_d(0x02) | |
| /* 5d3 */ JSL(ASM_CustomWindow_setupWindow) | |
| // The function we call will either set or clear the carry to let us know | |
| // if we should skip the original parameter loading code or not. | |
| /* 5d7 */ BCS(0x56) | |
| /* 5d9 */ // STA_d(0x02) ... | |
| } | |
| ASM_CustomWindow_setupWindow: { | |
| SEP(0x30) | |
| LDX_8(0x00) | |
| _SearchCustomWindowListLoop: | |
| LDA_xl(CustomWindowList) | |
| BMI_a(_WindowNotInList) | |
| CMP_d(0x14) | |
| BEQ(4) // _WindowInList | |
| INX | |
| JMP(_SearchCustomWindowListLoop) | |
| _WindowInList: | |
| REP(0x30) | |
| // We're using the custom window stuff. | |
| // Read the window parameters from the global variables. | |
| LDA_a(MEM_CustomWindowParams_X) | |
| AND_i(0x00FF) | |
| LDX_d(0x10) | |
| STA_x(0x0006) | |
| LDA_a(MEM_CustomWindowParams_Y) | |
| AND_i(0x00FF) | |
| STA_x(0x0008) | |
| LDA_a(MEM_CustomWindowParams_W) | |
| AND_i(0x00FF) | |
| DEC DEC | |
| STA_x(0x000A) | |
| LDA_a(MEM_CustomWindowParams_H) | |
| AND_i(0x00FF) | |
| DEC DEC | |
| STA_x(0x000C) | |
| // Set carry to skip the original code with the BCS instruction we return to. | |
| SEC | |
| RTL | |
| _WindowNotInList: | |
| REP(0x30) | |
| // We're using a built-in window. Finish computing the offset into the window table. | |
| TYA ASL ASL ASL STA_d(0x02) // Code we replaced | |
| // Note that we need to preserve this value in A! Don't overwrite it! | |
| // Clear carry to run the original code after we return. | |
| CLC | |
| RTL | |
| } |
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